kaartdata

Kaartdata, or kaartdata in Dutch, is geospatial information used to represent features, locations and phenomena on the Earth's surface in map form. It includes vector data (points, lines, polygons) and raster data (gridded imagery or elevation models), organized in layers that can be combined in geographic information systems (GIS) for analysis and visualization.

In the Netherlands, kaartdata is largely produced and managed by public institutions and made accessible through the PDOK platform. Key sources include the Basisregistratie Adressen en Gebouwen (BAG) for addresses and buildings, the Basisregistratie Kadaster (BRK) for parcels, and the basis topografie such as the Top10NL base map. Many datasets are available as open data with usage conditions and attribution, though some data are subject to licensing through Kadaster or other agencies.

Data formats and standards commonly used include vector formats such as Shapefile, GeoJSON and GML, and raster formats such as GeoTIFF. Data are stored in standardized coordinate reference systems and described with metadata following standards such as ISO 19115 and OGC specifications (WMS, WFS, WMTS) to support discovery, access and interoperability.

Applications of kaartdata span urban planning, navigation, environmental monitoring, disaster management and asset management. Challenges include maintaining data currency and accuracy, harmonizing data across different sources, managing licensing and attribution, and ensuring interoperability between diverse systems and platforms.